/*******************************************************************************
 * Copyright (c) 2006 Tom Schindl and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Tom Schindl - initial API and implementation
 *******************************************************************************/

package com.gcsf.books.gui.dialogs;

import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ICellModifier;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TableItem;

/**
 * Edit cell values in a table
 * 
 * @author Tom Schindl <tom.schindl@bestsolution.at>
 * 
 */
public class Snippet009CellEditors {
  private class MyContentProvider implements IStructuredContentProvider {

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java
     * .lang.Object)
     */
    public Object[] getElements(Object inputElement) {
      return (MyModel[]) inputElement;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.jface.viewers.IContentProvider#dispose()
     */
    public void dispose() {

    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface
     * .viewers.Viewer, java.lang.Object, java.lang.Object)
     */
    public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {

    }

  }

  public class MyModel {
    public int counter;

    public MyModel(int counter) {
      this.counter = counter;
    }

    public String toString() {
      return "Item " + this.counter;
    }
  }

  public Snippet009CellEditors(Shell shell) {
    final TableViewer v = new TableViewer(shell, SWT.BORDER
        | SWT.FULL_SELECTION);
    v.setLabelProvider(new LabelProvider());
    v.setContentProvider(new MyContentProvider());
    v.setCellModifier(new ICellModifier() {

      /*
       * (non-Javadoc)
       * 
       * @see
       * org.eclipse.jface.viewers.ICellModifier#canModify(java.lang.Object,
       * java.lang.String)
       */
      public boolean canModify(Object element, String property) {
        return ((MyModel) element).counter % 2 == 0;
      }

      /*
       * (non-Javadoc)
       * 
       * @see org.eclipse.jface.viewers.ICellModifier#getValue(java.lang.Object,
       * java.lang.String)
       */
      public Object getValue(Object element, String property) {
        return ((MyModel) element).counter + "";
      }

      /*
       * (non-Javadoc)
       * 
       * @see org.eclipse.jface.viewers.ICellModifier#modify(java.lang.Object,
       * java.lang.String, java.lang.Object)
       */
      public void modify(Object element, String property, Object value) {
        TableItem item = (TableItem) element;
        ((MyModel) item.getData()).counter = Integer.parseInt(value.toString());
        v.update(item.getData(), null);
      }

    });
    v.setColumnProperties(new String[] { "column1" });
    v.setCellEditors(new CellEditor[] { new TextCellEditor(v.getTable()) });

    MyModel[] model = createModel();
    v.setInput(model);
    v.getTable().setLinesVisible(true);
  }

  private MyModel[] createModel() {
    MyModel[] elements = new MyModel[10];

    for (int i = 0; i < 10; i++) {
      elements[i] = new MyModel(i);
    }

    return elements;
  }

  /**
   * @param args
   */
  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    new Snippet009CellEditors(shell);
    shell.open();

    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }

    display.dispose();

  }

}
